| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [verb] that [art] [adj] | 397 |
|
| 2 | [verb] that [art] [adj] system | 140 |
|
| 3 | is [verb] [art] [adj] system | 27 |
|
| 4 | is that [art] [adj] system | 12 |
|
| 5 | is [verb] that [art] system | 10 |
|
